Some states award delegates to candidates on a winner-take-all basis, meaning that the candidate with the most votes in a state is awarded all of that state's delegates. Other states award delegates in proportion to each candidate's share of the primary vote.
Provocative angiography involves a full diagnostic angiogram followed by administration of intra-arterial procoagulant agents to identify an occult bleeding source in patients who have normal test results after lower gastrointestinal bleeding.
Results of Transcranial Doppler Ultrasound. 1  A radiologist reviews the recorded images and other test data for evidence of any abnormality. High blood flow velocity suggests that blood flow is too turbulent or that the blood vessel is too narrow. This finding may indicate a blockage, vasospasm, or an arteriovenous malformation. If a definitive diagnosis can be made, appropriate treatment will be initiated.